One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,4)(3,7,8,6)(9,10)(11,13)(12,14)(15,16)(17,18)(19,24)(20,29)(21,26)(22,32)(23,28)(25,31)(27,30)(1,3,5,8)(2,6,4,7)(9,11,13,10)(12,14,16,15)(17,19,23,29)(18,24,28,20)(21,22,25,30)(26,32,31,27)(1,2,5,4)(3,6,8,7)(10,11)(12,16)(17,20,30,26,23,24,22,31)(18,25,32,19,28,21,27,29)(1,4,5,2)(3,6,8,7)(9,12,13,16)(10,14,11,15)(17,21)(18,26)(19,22)(20,27)(23,25)(24,32)(28,31)(29,30)(10,11)(14,15)(17,22,23,30)(18,27,28,32)(19,21,29,25)(20,26,24,31)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.